Ruby: find items in hash by values

Question

I'm currently working with a ruby hash that looks like the following:

{"employee"=>[{"name"=>"john", "level"=>"1", "position"=>"S1"}, 
              {"name"=>"bill", "level"=>"2", "position"=>"S2"}]}

These are two examples of employees and I need to be able to pull employees out by values. For example I'd like to get all employees who's level == 2, or all employees who's position == S1.

How would I do this in Ruby?

Answer 1

Use Hash#select or Array#select.

level_2_employees = infoHash["employee"].select {|k| k["level"] == "2"}

This will return an array of employee info hashes according to your criteria. Be sure to put quotes around value for level